Saw.



L. BURESCH.

SAW.

APPUcATloN FILED MAR.2|. 1917.

Patented Mar. 19, 1918.

UNITED STATES PATENT OFFICE.

LUDWIG BURESCH, OF EMMETT, IDAHO.

SAW.

Application filed March 21` 1917.

To f//Z lello/a it may rom-ern.'

lie it known that l. lii'nvvio lrfaiiscii, a subject ot the liniperor ot- (ierinany. resident ol' Innuett. count)` of (lem. and `qtate ot' idaho. have invented certain new aud u-el'ul lmproveinents` in Saws. of which the Following' is a specification.

This invention relates to improvements iu carpenters1 tools, aud particularly to hand-saws.

'haA principal object of the invention is to provide a saw having a straight back which may he graduated, if desired. so that distances may be readily measured therefrom` and combined with the saw handle an upright element, forming, when iu an erect operative position, an angle of 90 degrees whereby the saw blade may be used as a square.

A further object is to provide with such collapsible square, blade, means whereb)r it may be readily raised into operative position or collapsed Within the handle so that no unsightly proiection appears or interferes with the ordinary use of the saw.

These and other objects are attained by the novel construction and combination of parts hereafter described and shown in the accompanying drawing, forming a material part of this specification, and in which Figure 1 is a side elevational view of a saw showing the application of the invention.

Fig. 2 is an enlarged partial sectional view showing the blade in a raised or operative position. and

Fig. 3 is, a similar view of the same showingr the blade as received into the handle.

ln the drawings, the numeral 1() is applied to the saw blade. which is of the usual construction. provided with teeth 11 upon its cutting7 edge. the bank 12 being straight and provided with graduations 13 a5 indicated.

This hladt` i :dlived in a handle l5. pro vided with an opening lt through which the lingers ol' ilrA op'i'atov enter. the han in the liaudl-` li innate, vrt rivet 1S.

Specification of Letters Patent.

atciited Mar. 19, 1918.

Serial No. 156,267.

Within the handh` is a substantially reetaugular opening 2O arranged diagonallv and having secured in a ret-ess l. a Ispring t-leineut L having` a heut, hook-shaped end4 Extending outwardli through the slot 19. formed in oue side ot` the handle. is a projet-thin '24. b v means of which the spring 2'. may be retracted farther into the recess when desired.

plate or blade 2T, provided with graduations 26. is receivable within the ret-ess 20, the blade having au augularly turned portion JT at' its lower end provided with au npturued toe element QS cngageable within a corresponding recess 29 at the top of the opening 20. an indentation 9.3 being formed in the angular element S27, the same being adapted to engage with the hook or bent tree end of the spring 22 when in an extended position.

A clip 30 is formed v\'ith the blade 25 hv means of which the same may he withdrawn through the passage 31, leading to the opening 20, the projection QT having a flat portion 33 adapted to engage upon the seat 34, formed at the upper end of the opening 20, the seat being?r parallel with the back 12 0f the saw blade.

ln operation. when it is desired to extend the square blade 25, the clip 530 is grasped by the fingers. the blade withdrawn through the pass-.ige 31, until the end of the spring 22 is engaged in the recess 23 at which time the angular projection 27 has become positioned on the seat 34, holding the, blade securely at right angles with the saw-blade, the lower end of the square blade being seated against a shoulder 35. whereby it is positioned at the proper angle with respect to the baek of the saw-blade.

When not iu use, the projection 21 is moved in the slot 19, the depression of the sp ing allowing the blade to be pressed backward into the opening 20 iu au obvious manner. and upon its release to bold the paire blade from movement b v its tension.

li-iv ine' thus deserihed my invention, v hat I claim :w new. and desire to secure bv lrtv rs lziteut. is

la a tool hain: a fatraight edge and a hanlh provided a ltll a pocket arranged at an angle with and adjacent to said straight edge, the combination of a blade adapted to be housed in said pocket, a lateral extension thereon for engagementl with one wall ofsaid pocket to maintain said blade at right angles with said straight edge when in extended position, and releasable means for maintaining said extension in engagement with said Wall of said pocket.

In testimony whereof I have axed my 10 signature.

LUDWIG BURESCH. 

